First DIY quadcopter

[tombost]

total of 1258,7g

 

[GJH105775]

Enter the closest data to your quadcopter here: http://www.ecalc.ch/xcoptercalc.php

 

[tombost]

Battery
Load: 23.29 C
Voltage: 9.63 V
Rated Voltage: 11.10 V
Capacity: 5000 mAh
Energy: 55.5 Wh
Flight Time: 2.6 min
Mixed Flight Time: 6.9 min
Hover Flight Time: 9.3 min
Weight: 405 g
14.3 oz
Motor @ Optimum Efficiency
Current: 28.90 A
Voltage: 9.41 V
Revolutions*: 10221 rpm
electric Power: 272.0 W
mech. Power: 217.4 W
Efficiency: 79.9 %
Motor @ Maximum
Current: 29.12 A
Voltage: 9.40 V
Revolutions*: 10197 rpm
electric Power: 273.7 W
mech. Power: 218.8 W
Efficiency: 79.9 %
est. Temperature: 53 °C
127 °F
Motor @ Hover
Current: 6.86 A
Voltage: 10.70 V
Throttle (linear): 38 %
electric Power: 73.4 W
mech. Power: 34.1 W
Efficiency: 46.4 %
est. Temperature: 45 °C
113 °F
specific Thrust: 4.28 g/W
0.15 oz/W
Total Drive
Drive Weight: 1070 g
37.7 oz
Current @ Hover: 27.46 A
P(in) @ Hover: 304.8 W
P(out) @ Hover: 136.3 W
Efficiency @ Hover: 44.7 %
Current @ max: 116.47 A
P(in) @ max: 1292.8 W
P(out) @ max: 875.0 W
Efficiency @ max: 67.7 %
Multicopter
All-up Weight: 1258 g
44.4 oz
add. Payload: 1985 g
70 oz
max Tilt: 67 °
max. Speed: 67 km/h
41.6 mph
with Rotor fail:

 

[GJH105775]

Looks good then.

 

[tombost]

i can't find 35Amp ESC..
I understand what C means so the multistar 5200mah * 20C can give 104A, ok but my motor specs is : Max current: 30A, so 30 * 4 = 120A is that right ?

 

[GJH105775]

Yes, you'll probably want to get a bigger battery, or more efficient motors. As for the ESCs what about 40 amp?

 

[tombost]

what about this motor : http://www.hobbyking.com/hobbyking/..._Series_28_30_900kv_300W_Brushless_Motor.html
i can use 20C and 30A ESC

specs :
Model: NTM Prop Drive Series 28-30 900kv
Kv: 900rpm/v
Max current: 18A
Max Power: 215W @ 12v (3S) / 300W @ 15v (4S)
Shaft: 3mm
Weight: 66g
ESC: 25~30A
Cell count: 3s~4s Lipoly
Bolt holes: 16mm & 19mm
Bolt thread: M3
Connection: 3.5mm Bullet-connector

 

[GJH105775]

looks good, you could get bigger props too.

 

[holtneil]

Hi a 10x4.7 prop will work really well on that motor set up

 

[tombost]

does 10x4.5 good or really need 10x4.7 ?

 

[GJH105775]

10x4.5 is fine, but you get more lift and speed with the 4.7 pitch.

 

[tombost]

Ok, thanks and with this motor i can use 20C lipo

 

[GJH105775]

That should be true, and anytime.

 

[holtneil]

Hi mate your be good with a 20c battery , as for the props the 0.2 deg pitch between the 10x4.5 and 10x4.7 will give you loads more lift trust be I have flown on both props and the 10x4.7 really make the quad jump with the extra lift

 

[Jack Young]

Hello Tombost, AS a biginner, you have to buy some small fpv for practicing then diy quadcopter by yourself. Components of quadcopter is complex and what motors \ ESC \ propellers and battery combination will work with each other you have to know. Before you start buying parts you should have rough idea, for what purpose you want to make your quadcopter?

Hello,

First, sorry for my bad english I'm French.. I have a SYMA X5C and i want to create a "good" quadcopter to explore outside with FPV transmission and record with a mobius. It's my first setup and i don't know if this is right :

ESC: http://www.hobbyking.com/hobbyking/...0A_BlueSeries_Brushless_Speed_Controller.html

Mobius : http://www.banggood.com/fr/Mobius-N...s-C-1080P-HD-Mini-Action-Camera-p-966178.html

Flight controller : http://www.hobbyking.com/hobbyking/..._Flight_Controller_w_FTDI_DSM2_Comp_Port.html

+bluetooth : http://www.hobbyking.com/hobbyking/...th_Module_Programmer_Android_compatible_.html

Frame : http://www.hobbyking.com/hobbyking/...opter_Frame_450mm_Integrated_PCB_Version.html

Kit FPV (tx+rx+sony cam+antennas) : http://www.hobbyking.com/hobbyking/...TX_RC832_RX_Sony_700CCD_and_C_P_Antennas.html

Propeller
: http://www.hobbyking.com/hobbyking/store/__22440__Slow_Fly_Electric_Prop_8045_SF_4_pc_Green_.html

RC radio : http://www.hobbyking.com/hobbyking/..._Module_8ch_Receiver_Mode_2_v2_Firmware_.html

+battery : http://hobbyking.com/hobbyking/stor...tmax_2500mAh_Transmitter_Pack_Futaba_JR_.html

Motor : http://www.hobbyking.com/hobbyking/...D3536_8_1000KV_Brushless_Outrunner_Motor.html

quadcopter battery : http://www.hobbyking.com/hobbyking/store/__8588__ZIPPY_Flightmax_5000mAh_4S1P_30C.html

That's all, thanks for you help

om